EP0288266A3 - Discriminator between handwritten and machine-printed characters - Google Patents
Discriminator between handwritten and machine-printed characters Download PDFInfo
- Publication number
- EP0288266A3 EP0288266A3 EP88303558A EP88303558A EP0288266A3 EP 0288266 A3 EP0288266 A3 EP 0288266A3 EP 88303558 A EP88303558 A EP 88303558A EP 88303558 A EP88303558 A EP 88303558A EP 0288266 A3 EP0288266 A3 EP 0288266A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- handwritten
- discriminator
- machine
- printed characters
- characters
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
- G06V30/10—Character recognition
- G06V30/24—Character recognition characterised by the processing or recognition method
- G06V30/242—Division of the character sequences into groups prior to recognition; Selection of dictionaries
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
- G06V30/10—Character recognition
- G06V30/24—Character recognition characterised by the processing or recognition method
- G06V30/242—Division of the character sequences into groups prior to recognition; Selection of dictionaries
- G06V30/244—Division of the character sequences into groups prior to recognition; Selection of dictionaries using graphical properties, e.g. alphabet type or font
- G06V30/2455—Discrimination between machine-print, hand-print and cursive writing
Landscapes
- Engineering & Computer Science (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Theoretical Computer Science (AREA)
- Character Input (AREA)
- Character Discrimination (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP95268/87 | 1987-04-20 | ||
JP62095268A JPS63261486A (en) | 1987-04-20 | 1987-04-20 | Writing style identifying device |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0288266A2 EP0288266A2 (en) | 1988-10-26 |
EP0288266A3 true EP0288266A3 (en) | 1990-05-30 |
EP0288266B1 EP0288266B1 (en) | 1993-03-17 |
Family
ID=14133019
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88303558A Expired - Lifetime EP0288266B1 (en) | 1987-04-20 | 1988-04-20 | Discriminator between handwritten and machine-printed characters |
Country Status (4)
Country | Link |
---|---|
US (1) | US4910787A (en) |
EP (1) | EP0288266B1 (en) |
JP (1) | JPS63261486A (en) |
DE (1) | DE3879254T2 (en) |
Families Citing this family (34)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2713911B2 (en) * | 1987-07-08 | 1998-02-16 | 株式会社東芝 | Mail handling equipment |
US5247587A (en) * | 1988-07-15 | 1993-09-21 | Honda Giken Kogyo Kabushiki Kaisha | Peak data extracting device and a rotary motion recurrence formula computing device |
US5119441A (en) * | 1989-03-28 | 1992-06-02 | Ricoh Company, Ltd. | Optical character recognition apparatus and method using masks operation |
JPH087785B2 (en) * | 1989-05-16 | 1996-01-29 | 松下電器産業株式会社 | Binarization processor |
US5202933A (en) * | 1989-12-08 | 1993-04-13 | Xerox Corporation | Segmentation of text and graphics |
JP2523222B2 (en) * | 1989-12-08 | 1996-08-07 | ゼロックス コーポレーション | Image reduction / enlargement method and apparatus |
US5065437A (en) * | 1989-12-08 | 1991-11-12 | Xerox Corporation | Identification and segmentation of finely textured and solid regions of binary images |
US5129014A (en) * | 1989-12-08 | 1992-07-07 | Xerox Corporation | Image registration |
US5187753A (en) * | 1989-12-08 | 1993-02-16 | Xerox Corporation | Method and apparatus for identification and correction of document skew |
US5048109A (en) * | 1989-12-08 | 1991-09-10 | Xerox Corporation | Detection of highlighted regions |
US5181255A (en) * | 1990-12-13 | 1993-01-19 | Xerox Corporation | Segmentation of handwriting and machine printed text |
US5272764A (en) * | 1989-12-08 | 1993-12-21 | Xerox Corporation | Detection of highlighted regions |
US5402504A (en) * | 1989-12-08 | 1995-03-28 | Xerox Corporation | Segmentation of text styles |
US5131049A (en) * | 1989-12-08 | 1992-07-14 | Xerox Corporation | Identification, characterization, and segmentation of halftone or stippled regions of binary images by growing a seed to a clipping mask |
EP0447751B1 (en) * | 1990-01-19 | 1999-06-09 | Fujitsu Limited | Image processing system |
US5193122A (en) * | 1990-12-03 | 1993-03-09 | Xerox Corporation | High speed halftone detection technique |
US5237628A (en) * | 1991-06-03 | 1993-08-17 | Nynex Corporation | System and method for automatic optical data entry |
DE69228647T2 (en) * | 1991-11-01 | 1999-09-23 | Eastman Kodak Co | Method and device for detecting text in dot matrix printing to improve optical character recognition |
US5357581A (en) * | 1991-11-01 | 1994-10-18 | Eastman Kodak Company | Method and apparatus for the selective filtering of dot-matrix printed characters so as to improve optical character recognition |
US5487115A (en) * | 1992-05-14 | 1996-01-23 | United Parcel Service | Method and apparatus for determining the fine angular orientation of bar code symbols in two-dimensional CCD images |
DE4308245C1 (en) * | 1993-03-16 | 1994-11-03 | Friedemann Groh | Method for the recognition of characters or strokes |
US5444797A (en) * | 1993-04-19 | 1995-08-22 | Xerox Corporation | Method and apparatus for automatic character script determination |
JP2856661B2 (en) * | 1993-11-05 | 1999-02-10 | シャープ株式会社 | Density converter |
US6018593A (en) * | 1996-09-11 | 2000-01-25 | Ricoh Company, Ltd. | Method and system for correcting image position based upon predetermined pattern portions |
US6301386B1 (en) * | 1998-12-09 | 2001-10-09 | Ncr Corporation | Methods and apparatus for gray image based text identification |
JP2000181993A (en) * | 1998-12-16 | 2000-06-30 | Fujitsu Ltd | Character recognition method and device |
US6940617B2 (en) * | 2001-02-09 | 2005-09-06 | Matsushita Electric Industrial Co., Ltd. | Printing control interface system and method with handwriting discrimination capability |
US7072514B1 (en) | 2003-02-06 | 2006-07-04 | The United States Of America As Represented By The National Security Agency | Method of distinguishing handwritten and machine-printed images |
US20070065003A1 (en) * | 2005-09-21 | 2007-03-22 | Lockheed Martin Corporation | Real-time recognition of mixed source text |
JP5363591B2 (en) * | 2009-12-15 | 2013-12-11 | 富士通フロンテック株式会社 | Character recognition method, character recognition device, and character recognition program |
JP2016015115A (en) * | 2014-06-09 | 2016-01-28 | 株式会社リコー | Information processing device, information processing method, and recording medium |
US11308492B2 (en) | 2019-07-03 | 2022-04-19 | Sap Se | Anomaly and fraud detection with fake event detection using pixel intensity testing |
US20210004795A1 (en) | 2019-07-03 | 2021-01-07 | Sap Se | Anomaly and fraud detection using duplicate event detector |
US11488407B1 (en) * | 2021-06-01 | 2022-11-01 | Lead Technologies, Inc. | Method, apparatus, and computer-readable storage medium for recognizing characters in a digital document |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4163214A (en) * | 1977-07-12 | 1979-07-31 | Nippon Telegraph And Telephone Public Corporation | Character recognition system |
US4326190A (en) * | 1978-08-30 | 1982-04-20 | Borland David L | Boundary trace slope feature detection system |
US4516262A (en) * | 1981-08-31 | 1985-05-07 | Ricoh Company, Ltd. | Character data processing apparatus |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56110191A (en) * | 1980-02-05 | 1981-09-01 | Tokyo Keiki Co Ltd | Type character recognizing device |
US4630307A (en) * | 1984-09-10 | 1986-12-16 | Eastman Kodak Company | Signal processing method and apparatus for sampled image signals |
-
1987
- 1987-04-20 JP JP62095268A patent/JPS63261486A/en active Pending
-
1988
- 1988-04-18 US US07/182,518 patent/US4910787A/en not_active Expired - Lifetime
- 1988-04-20 DE DE88303558T patent/DE3879254T2/en not_active Expired - Lifetime
- 1988-04-20 EP EP88303558A patent/EP0288266B1/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4163214A (en) * | 1977-07-12 | 1979-07-31 | Nippon Telegraph And Telephone Public Corporation | Character recognition system |
US4326190A (en) * | 1978-08-30 | 1982-04-20 | Borland David L | Boundary trace slope feature detection system |
US4516262A (en) * | 1981-08-31 | 1985-05-07 | Ricoh Company, Ltd. | Character data processing apparatus |
Non-Patent Citations (2)
Title |
---|
N.E.C. RESEARCH AND DEVELOPMENT * |
PATENT ABSTRACTS OF JAPAN * |
Also Published As
Publication number | Publication date |
---|---|
DE3879254T2 (en) | 1993-10-14 |
DE3879254D1 (en) | 1993-04-22 |
EP0288266B1 (en) | 1993-03-17 |
US4910787A (en) | 1990-03-20 |
JPS63261486A (en) | 1988-10-28 |
EP0288266A2 (en) | 1988-10-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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17P | Request for examination filed |
Effective date: 19880427 |
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